the term “spirituality” has been proposed to denote the notion of intellectuality. actually, the former has been derived from the latin words “spiritus” (means breath) and “spirare” (means inhaling or breathing). given the latin translations of the new testament, the term “spiritualis” or spiritual person is an individual whose life is dominated or influenced by the holy spirit or god (1).

one of the main problems in micro irrigation system is inappropriate combination and in some cases inappropriate performance of filters and sand tanks in central control systems which cause reduction in efficiency of system and increasing of operating costs. this study evaluates affect the amount of algae on the performance of disc filters sand tank in research farm deputy of soil and water and...